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Diode-pumped Alexandrite laser with passive SESAM Q-switching and wavelength tunability

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Title: Diode-pumped Alexandrite laser with passive SESAM Q-switching and wavelength tunability
Authors: Parali, U
Sheng, X
Minassian, A
Tawy, G
Sathian, J
Thomas, GM
Damzen, MJ
Item Type: Journal Article
Abstract: We report the first experimental demonstration of a wavelength tunable passively Q-switched red-diode-end pumped Alexandrite laser using a semiconductor saturable absorber mirror (SESAM). We present the results of the study of passive SESAM Q-switching and wavelength-tuning in continuous diode-pumped Alexandrite lasers in both linear cavity and X-cavity configurations. In the linear cavity configuration, pulsed operation up to 27 kHz repetition rate in fundamental TEM00 mode was achieved and maximum average power was 41 mW. The shortest pulse generated was 550 ns (FWHM) and the Q-switched wavelength tuning band spanned was between 740 nm and 755 nm. In the X-cavity configuration, a higher average power up to 73 mW, and obtained with higher pulse energy 6.5 J at 11.2 kHz repetition rate, in fundamental TEM00 mode with excellent spatial quality M2 < 1.1. The Q-switched wavelength tuning band spanned was between 775 nm and 781 nm.
Issue Date: 4-Oct-2017
Date of Acceptance: 13-Sep-2017
URI: http://hdl.handle.net/10044/1/51887
DOI: https://dx.doi.org/10.1016/j.optcom.2017.09.047
ISSN: 0030-4018
Publisher: Elsevier
Start Page: 970
End Page: 976
Journal / Book Title: Optics Communications
Volume: 410
Copyright Statement: © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: British Council (UK)
Innovate UK
Funder's Grant Number: 215277462
Keywords: 0205 Optical Physics
0906 Electrical And Electronic Engineering
Optoelectronics & Photonics
Publication Status: Published
Appears in Collections:Physics
Faculty of Natural Sciences